John Nathan-Turner was always keen to innovate in his early days on Doctor Who. A more up to date electronic theme tune and score? Check. A more advanced robot companion than K-9? Er, not quite.

This documentary includes the best in-depth interviews with Colin Baker (the Sixth Doctor), Nicola Bryant (Peri), Bonnie Langford (Mel), Michael Jayston (The Valeyard), John Nathan-Turner ...